The Marlins activated Norby (quadriceps) from the 10-day injured list Monday.

Norby will rejoin the Marlins after missing the minimum 10 days while recovering from a left quad strain. The 25-year-old was activated after completing a three-game rehab assignment at Triple-A Jacksonville, during which he went 2-for-10 with two RBI, a run scored and four strikeouts. Norby is expected to settle back in as Miami's primary third baseman for the final two weeks of the season.

Hayes will start at third base and bat eighth in Monday's contest in St. Louis.

Hayes had been scheduled for a day off, but he's been added to the lineup after Spencer Steer (neck) was scratched. Sal Stewart will move from third base to first base to cover for Steer, while Hayes will occupy the hot corner.

Devanney is not in the lineup for Monday's contest versus the Cubs.

It's the second straight day out of the lineup for Devanney. The Pirates are going with Jared Triolo at third base and Nick Gonzales at shortstop in Monday's series opener.

Alexander (elbow) is starting at third base and batting fifth against the Giants on Monday, Jack Sommers of SI.com reports.

Alexander was struck on his left elbow by a pitch during the Diamondbacks' 6-4 win over the Rangers on Sunday. He was diagnosed with an elbow contusion, and the injury isn't severe enough to be held out of the starting lineup for Monday's series opener. Alexander has gone 7-for-27 (.259) with four RBI over his last seven games.

Hayes is out of the lineup for Monday's game against the Cardinals.

After going 0-for-7 with a walk over the final two contests of the Reds' weekend series in Sacramento, Hayes will get a chance to catch his breath as Cincinnati kicks off a three-game set in St. Louis. Sal Stewart will step in for Hayes at third base and will bat fifth.

Gorman is out of the lineup for Monday's game against the Reds, John Denton of MLB.com reports.

Gorman had started in each of the Cardinals' last 29 games, but he could be headed for a steep reduction in playing time over the final two weeks of the regular season after St. Louis reinstated Nolan Arenado (shoulder) from the injured list Monday. With Arenado immediately slotting back into the lineup at his usual post at third base and with Willson Contreras (undisclosed) back in action Monday following a one-game hiatus, St. Louis now has its top options at the corner-infield spots available for the first time since late July.

The Cardinals activated Arenado (shoulder) from the 10-day injured list Monday. He'll start at third base and bat sixth in the Cardinals' series opener versus the Reds, John Denton of MLB.com reports.

Arenado needed nearly seven weeks to recover from a right shoulder strain, but he's been cleared to return to action after going 1-for-13 at the plate in four rehab games with Double-A Springfield. The 34-year-old should be used as the team's primary third baseman down the stretch, which is likely to result in a downturn in playing time for Nolan Gorman.

House is absent from the lineup for Monday's contest against Atlanta.

Paul DeJong started at third base Sunday versus the Pirates and contributed two doubles in three plate appearances, which has earned him another start at the hot corner Monday. House had started five straight and nine of 10 before sitting out back-to-back contests.

Lawlar started at third base and went 1-for-3 with a double and a run scored in Sunday's 6-4 win over the Twins.

Lawlar lined a double to left field and scored in the Diamondbacks' three-run fourth inning. Following an initial 0-for-11 run upon being called up in late August, Lawlar is batting .304 (7-for-23) with five doubles, three RBI, two steals and four runs scored over last eight contests. He hasn't been an everyday member of the starting lineup, but that could change in the short term after Blaze Alexander (elbow) was removed from Sunday's game. Testing on Alexander's elbow came back negative, but it was very swollen postgame, per Steve Gilbert of MLB.com. He'll undergo further testing Monday and is day-to-day heading into that night's series opener against the Giants. Lawlar stands to benefit from any time Alexander misses, as those two have shared third base since the beginning of the month.

Alexander suffered a left elbow contusion in Sunday's 6-4 win over the Rangers, Steve Gilbert of MLB.com reports.

Alexander was hit by a pitch in the top of the fourth inning, ultimately exiting the contest as a result. He appears to have avoided any significant damage, and the 26-year-old is considered day-to-day ahead of Monday's series opener with the Giants at home.